ASSESSMENT OF HEAVY METAL CONTAMINATION IN MILK COMING FROM FAGARAS AREA

References: 13th SGEM GeoConference on Nano, Bio And Green – Technologies For A Sustainable Future, www.sgem.org, SGEM2013 Conference Proceedings, ISBN 978-619-7105-06-3 / ISSN 1314-2704, June 16-22, 2013, 109 - 112 pp

ABSTRACT

Heavy metals are found in different concentrations in soil, water, air, food of vegetable or animal origin, depending on various factors that determine their pollution. Heavy metal toxicity is the result of the binding of enzyme systems important in animal cell or certain components of cell membranes. Toxic effect occurs at above a certain threshold (Pb , Cd, Fe, Mn, Zn, Cu). The area from which we took the contaminated milk was an industrial area. The average of the milk samples from the cows in the polluted area exceeded the maximum limit, the statistic difference between those two lots of milk samples being very significant. In milk samples collected from the polluted area the results obtained exceeded the maximum limit allowed as established by the Order of the
Ministry of Health 975/1998. Although the concentration of lead and cadmium far exceeds the maximum allows limits set by the Ministry of Health Order 975/1998.
From Fagaras area there have been taken a number of 20 samples of milk. These samples of milk were mineralized. The mineralization was achieved through wet cleaning.

Keywords: milk, lead, cadmium, manganese.